Marine seismic streamer cable for providing selectable detector array connections
AssigneeDigicon, Inc.
InventorDavid R. Steetle
Life of this patent
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Abstract
A marine seismic cable comprising a plurality of universal sections, each section including a plurality of fundamental arrays, preferably positioned end-to-end. Each of the arrays are separately wired to a logic circuit in one of the connectors or cans between sections and wiring is provided for connections to each of the fundamental arrays in at least an adjoining section. The logic circuits are controlled by control signals to produce composite responses from a selected grouping of fundamental arrays and, preferably, also to produce weighted or tapered responses by connecting and emphasizing each of the fundamental responses in the desired weighted manner.
Claims12
A marine seismic cable including a plurality of identical sections successively connected together by identical end connectors,
- each of said sections comprising a plurality of linearly arrayed pressure detector groups which produce a composite electrical signal in response to the immediate pressure on the individual detectors within the group, each of said groups having the same number of detectors,
- each of said connectors comprising an electronic assembly for receiving said separate composite signals from the plurality of detector groups in the preceding cable section to a first side of said connector and for receiving separate composite signals from the plurality of detector groups in the succeeding cable section to the second side of said connector for producing selectable-and-combinable outputs signals from said first side composite signals and said second side composite signals,
- each of said cable sections further comprising wiring for connecting said end connector to the opposite end connector to carry signals originating from detectors in said cable section, signals originating from detectors in the suceeding cable section, and said selectable-and-combinable output signals.
A marine seismic cable including a plurality of identical sections successively connected together by identical end connectors,
- each of said sections comprising a plurality of linearly arrayed pressure detector groups which produce a composite electrical signal in response to the pressure on the individual detectors within the group, each of said groups having the same number of detectors, the spacing between detectors within the groups being substantially the same as the spacing separating the contiguous detectors in adjacent groups,
- each of said end connectors comprising an electronic assembly for receiving said separate composite signals from the plurality of detector groups in the cable section preceding said connector and for receiving separate composite signals from the plurality of detector groups in the cable section succeeding said connector and from the plurality of detector groups in the cable section next succeeding said succeeding cable section,
- each of said cable sections further comprising first wiring for connecting signals from the preceding end connector for signals originating from detectors preceding said preceding end connector,
- second wiring for connecting signals to said preceding end connector from the succeeding end connector for signals originating from detectors succeeding said succeeding end connector,
- third wiring for selectively operatively connecting said electronic assemblies to produce therefrom output responses from said detector groups, and
- fourth wiring for communicating the outputs from said electronic assemblies for recording.
Dependencies are inferred from the claim text.